off and

• adv. 忽然(意外地)

例句

用作副词 (adv.)

1. The powder ignited and suddenly puffed up.
   火药着了火，忽然向上喷起来。
2. And then all of a sudden I was going off the road!
   可是忽然间，我的车朝着公路外边冲出去了。

词汇搭配

• on and off 断断续续地
• stand off and on 一忽儿接近海岸,一忽...
• play off and on with 一会戴上一会摘下...
• pack off bag and baggage 连人带随身东西一齐打...
• off and on 断断续续